公开(公告)号：US06744989B2

公开(公告)日：2004-06-01

申请号：US09848606

申请日：2001-05-02

申请人： Takehiro Tsuritani ,  Yuichi Yamada ,  Noboru Edagawa ,  Masatoshi Suzuki

发明人： Takehiro Tsuritani ,  Yuichi Yamada ,  Noboru Edagawa ,  Masatoshi Suzuki

IPC分类号： H04B1000

CPC分类号： H04B10/2935 ,  H04J14/0221

摘要： An object of this invention is to improve transmission characteristics in WDM transmission. An optical transmitter (10) wavelength-multiplexes signal lights of wavelengths &lgr;1 through &lgr;n and outputs them onto an optical transmission line (12). Optical powers of the signal lights of the respective wavelength &lgr;1 through &lgr;n are identical or become smaller proportional to the wavelength. One repeater span of the optical transmission line (12) is composed of an optical fibers (20, 22) and an optical amplifier (24), and a gain equalizer (26) is dispersed every several repeater spans. The optical amplifier (24) in the repeater span amplifies each signal light so that optical power of a signal on the shorter wavelength side becomes smaller than that of a signal on the longer wavelength side. The gain equalizer (26) equalizes optical powers of the respective signal lights.

摘要翻译： 本发明的目的是提高WDM传输中的传输特性。 光发射机（10）将波长λ1至兰博的信号光波长多路复用并输出到光传输线路（12）上。 相应波长λ1至lambdan的信号光的光功率与波长成比例相同或变小。 光传输线（12）的一个中继器跨度由光纤（20,22）和光放大器（24）组成，增益均衡器（26）每隔几个中继器分散。 中继器中的光放大器（24）放大每个信号光，使得较短波长侧的信号的光功率变得比较长波长侧的信号的光功率小。 增益均衡器（26）使各个信号灯的光功率相等。

公开(公告)号：US06640026B2

公开(公告)日：2003-10-28

申请号：US09956573

申请日：2001-09-18

申请人： Takehiro Tsuritani ,  Masatoshi Suzuki

发明人： Takehiro Tsuritani ,  Masatoshi Suzuki

IPC分类号： G02B628

CPC分类号： G02B6/29386 ,  G02B6/12007 ,  G02B6/29344 ,  G02B6/29352

摘要： To realize an optical demultiplexer with a constant chromatic dispersion value, an optical signal of wavelength (&lgr;1) enters a port (A) of an optical circulator (10), and an optical signal of wavelength (&lgr;2) enters a port (A) of an optical circulator (12). A port (B) of the optical circulator (10) connects to a port (X0) of an interleaved optical filter (14), and a port (B) of the optical circulator (12) connects to a port (X1) of the optical filter (14). A port (Y0) of the optical filter (14) connects to a port (Y1) of the optical filter (14) through an optical isolator (16). The optical isolator (16) allows the optical propagation from the port (Y0) to the port (Y1) of the optical filter (14) and refuses the optical propagation from the port (Y1) to the port (Y0). An optical coupler (18) combines the input lights of the input ports (X0 and X1) from ports (C) of the optical circulators (10 and 12) and outputs from the output port (Y0). The optical filter (14) transmits wavelength (&lgr;1) in the straight propagation between the ports (X0, Y0) and between the ports (X1, Y1) and transmits wavelength (&lgr;2) in the cross propagation between the ports (X0, Y1) and between the ports (X1, Y0).

摘要翻译： 为了实现具有恒定色散值的光解复用器，波长（λ1）的光信号进入光环行器（10）的端口（A），并且波长（λ2）的光信号进入端口（A） 光循环器（12）。 光环行器（10）的端口（B）连接到交错滤光器（14）的端口（X0），并且光环行器（12）的端口（B）连接到 滤光器（14）。 滤光器（14）的端口（Y0）通过光隔离器（16）连接到滤光器（14）的端口（Y1）。 光隔离器（16）允许从端口（Y0）到滤光器（14）的端口（Y1）的光传播，并且拒绝从端口（Y1）到端口（Y0）的光传播。 光耦合器（18）将输入端口（X0和X1）的输入光与光循环器（10和12）的端口（C）和输出端口（Y0）的输出相结合。 光滤波器（14）在端口（X0，Y0）之间和端口（X1，Y1）之间的直线传播中传输波长（λ1），并且在端口（X0，Y1）之间的交叉传播中传输波长（λ2） 和端口（X1，Y0）之间。

公开(公告)号：US06556325B1

公开(公告)日：2003-04-29

申请号：US09507233

申请日：2000-02-18

申请人： Yukio Horiuchi ,  Masatoshi Suzuki ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Yukio Horiuchi ,  Masatoshi Suzuki ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： H04B1002

CPC分类号： H04B10/2916 ,  H04B10/0777 ,  H04B2210/074

摘要： An optical repeater monitoring system, according to the invention, comprises an oscillating source, a reference signal transmitter for transmitting a reference signal of a predetermined frequency generated from an output of the oscillating source to a first optical fiber, and an optical repeater. The optical repeater has a first photodetector for converting light from the first optical fiber into an electrical signal, a reference signal extractor for extracting a component of the reference signal from an output of the first photodetector, a carrier generator for generating a carrier from an output of the reference signal extractor, a monitor signal modulator for modulating the carrier generated by the carrier generator with a monitor signal showing a operating state of the optical repeater, a transmitter for transmitting an output of the monitor signal modulator to a second optical fiber. The system further comprises a demodulating signal generator for generating a demodulating signal from either of the output from the oscillating source and the reference signal, the demodulating signal having a frequency equal to that of the monitor signal carrier, a second photodetector for photodetecting the light propagated on the second fiber, and a monitor signal demodulator for demodulating the monitor signal from outputs of the second photodetector and demodulating signal generator.

摘要翻译： 根据本发明的光中继器监视系统包括振荡源，参考信号发射器，用于将从振荡源的输出产生的预定频率的参考信号传输到第一光纤，以及光中继器。 光中继器具有用于将来自第一光纤的光转换成电信号的第一光电检测器，用于从第一光电检测器的输出提取参考信号的分量的参考信号提取器，用于从输出端产生载波的载波发生器 参考信号提取器的监视信号调制器，用于利用示出所述光中继器的操作状态的监视信号调制由所述载波发生器产生的所述载波的监视信号调制器，用于将所述监视信号调制器的输出发送到第二光纤的发射器。 该系统还包括解调信号发生器，用于从振荡源的输出和参考信号中的任一个产生解调信号，解调信号的频率等于监视信号载波的频率;第二光电检测器，用于光检测传播的光 以及用于从第二光电检测器和解调信号发生器的输出解调监视信号的监视信号解调器。

公开(公告)号：US06459518B1

公开(公告)日：2002-10-01

申请号：US09329867

申请日：1999-06-11

申请人： Masatoshi Suzuki ,  Noboru Edagawa ,  Hidenori Taga ,  Shu Yamamoto

发明人： Masatoshi Suzuki ,  Noboru Edagawa ,  Hidenori Taga ,  Shu Yamamoto

IPC分类号： H04B1000

CPC分类号： H04B10/532

摘要： A laser diode continuously laser-oscillates and its output light is applied to an optical modulator. A pulse driver drives the optical modulator according to a data to be transmitted. A phase modulator is driven by a phase modulator driver and phase-modulates the output from the optical modulator. The polarization direction of the incident light of the phase modulator is set so that the modulation efficiency of the phase modulator becomes the maximum. The output light of the phase modulator inputs a birefringent medium and applies to an optical transmission line after transmitting the birefringent medium. The principal axis of the birefringent medium is disposed so as to be at an angle of 45° to the polarization direction of the output light from the phase modulator.

摘要翻译： 激光二极管连续激光振荡，其输出光被施加到光学调制器。 脉冲驱动器根据要发送的数据驱动光调制器。 相位调制器由相位调制器驱动器驱动并对来自光调制器的输出进行相位调制。 相位调制器的入射光的偏振方向被设定为使得相位调制器的调制效率达到最大。 相位调制器的输出光输入双折射介质，并在透射双折射介质之后施加到光传输线。 双折射介质的主轴被布置成与来自相位调制器的输出光的偏振方向成45°的角度。

公开(公告)号：US06409558B1

公开(公告)日：2002-06-25

申请号：US09714135

申请日：2000-11-17

申请人： Yoshitsugu Gokan ,  Naoto Hara ,  Masatoshi Suzuki

发明人： Yoshitsugu Gokan ,  Naoto Hara ,  Masatoshi Suzuki

IPC分类号： B63H2132

CPC分类号： B63H21/14 ,  B63B35/731

摘要： To provide a small-sized boat wherein a sufficient supercharging effect can be achieved. An engine having an exhaust manifold is disposed such that a crankshaft thereof extends in forward and rearward directions of a boat body, and an exhaust gas turbo charger which is driven to rotate by exhaust gas from the exhaust manifold is provided rearwardly of and adjacent to the exhaust manifold and rearwardly of and adjacent to the engine. The exhaust gas turbo charger is disposed such that a shaft which connects a turbine and a compressor is directed in leftward and rightward directions of the boat body, and the turbine is disposed adjacent to the exhaust manifold and the compressor is disposed adjacent to an intake port of the engine. An inter cooler is provided sidewardly of the compressor and disposed below an intake chamber.

摘要翻译： 提供能够实现足够的增压效果的小型船。 具有排气歧管的发动机被设置为使得曲轴在船体的前后方向上延伸，并且被排出气体从排气歧管被驱动旋转的排气涡轮增压器设置在排气歧管的后方并与其相邻 排气歧管，并与发动机相邻并相邻。 排气涡轮增压器被配置为使得连接涡轮机和压缩机的轴指向船体的左右方向，并且涡轮机邻近排气歧管设置，并且压缩机邻近进气口设置 的发动机。 中间冷却器设置在压缩机的侧面并且设置在进气室下方。

公开(公告)号：US5889607A

公开(公告)日：1999-03-30

申请号：US868976

申请日：1997-06-04

申请人： Masatoshi Suzuki ,  Noboru Edagawa ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Masatoshi Suzuki ,  Noboru Edagawa ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： G02F1/01 ,  G02F1/015 ,  G02F1/025 ,  H01S5/00 ,  G02F1/03

CPC分类号： G02F1/015 ,  G02F1/0121 ,  G02F2001/0157 ,  G02F2203/06 ,  G02F2203/26

摘要： Incident light 1 is inputted to an electro-absorption-type optical modulator 4 via an optical circulator 2 and a lens 3, and subjected to intensity modulation that corresponds to a modulation signal 8. The optical signal outputted by the electro-absorption-type optical modulator 4 is inputted to a Faraday rotator 6 via a lens 5, and the plane of polarization is rotated 45.degree.. The optical signal transmitted by the Faraday rotator 6 is totally reflected by a totally reflecting mirror 7, inputted for the second time to the Faraday rotator 6, then passed through the lens 5 after the plane of polarization has been rotated 45.degree. by this Faraday rotator 6, and readmitted by the electro-absorption-type optical modulator 4. The output of the electro-absorption-type optical modulator 4 is emitted via the lens 3 and the optical circulator 2. The polarization dependence of insertion loss can be eliminated because the plane of polarization is rotated 90.degree., and the incident light 1 readmitted to the electro-absorption-type optical modulator 4 at any plane of polarization. In view of this, the polarization dependent loss of an electro-absorption-type optical modulator can be eliminated by employing such optical modulators and creating a high-performance optical short pulse generating device, optical waveform shaping device, and optical demultiplexer.

摘要翻译： 入射光1通过光环行器2和透镜3输入到电吸收型光调制器4，经受与调制信号8对应的强度调制。由电吸收型光 调制器4通过透镜5输入到法拉第转子6，偏振面旋转45度。 由法拉第旋转器6传输的光信号被全反射镜7全反射，全反射镜7第二次输入到法拉第旋转器6，然后在该法拉第旋转器旋转了45°的偏振面之后通过透镜5 电吸收型光调制器4再次进入。电吸收型光调制器4的输出通过透镜3和光循环器2发射。插入损耗的偏振依赖性可以被消除，因为 偏振平面旋转90°，入射光1以任何偏振平面返回到电吸收型光调制器4。 鉴于此，可以通过采用这种光学调制器来消除电吸收型光学调制器的偏振相关损耗，并且产生高性能的光学短脉冲产生装置，光学波形整形装置和光学解复用器。

公开(公告)号：US5874663A

公开(公告)日：1999-02-23

申请号：US786035

申请日：1997-01-21

申请人： Kenji Fukaya ,  Makoto Hori ,  Masahiro Hamaya ,  Masatoshi Suzuki

发明人： Kenji Fukaya ,  Makoto Hori ,  Masahiro Hamaya ,  Masatoshi Suzuki

IPC分类号： G01N27/409 ,  G01N27/407

CPC分类号： G01N27/407 ,  G01N27/4062 ,  G01N27/4078

摘要： An air-fuel ratio sensor is provided in which sensor lead wires are held by a rubber bush at an end of a sensor housing. The rubber bush is made of a rubber material having a 100% modulus strength equal to or larger than 60 Kgf/cm.sup.2 even after the sensor is used under a temperature environment of 300.degree. C. for 100 hours.

摘要翻译： 提供了一种空燃比传感器，其中传感器引线由传感器壳体的端部处的橡胶衬套保持。 即使传感器在300℃的温度环境下使用100小时，橡胶衬套也由100％模量强度等于或大于60Kgf / cm2的橡胶材料制成。

公开(公告)号：US5864421A

公开(公告)日：1999-01-26

申请号：US864192

申请日：1997-05-28

申请人： Masatoshi Suzuki ,  Noboru Edagawa ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Masatoshi Suzuki ,  Noboru Edagawa ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： G02F1/35 ,  G02F1/33 ,  G02F2/02 ,  H04B10/2507 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2569 ,  H04B10/29 ,  H04B10/291 ,  H04B10/02

CPC分类号： H04B10/25077 ,  G02F1/33

摘要： An optical frequency shifter which has no insertion loss polarization dependency and no polarization mode dispersion is formed by: at least one ultrasonic wave generator for generating ultrasonic waves; at least one electric acousto-optic element forming at least one diffraction grating therein upon being applied with the ultrasonic waves generated by the ultrasonic wave generator; at least one polarization rotator for rotating a polarization plane of a first primary diffracted light produced by the diffraction grating, by 90.degree.; and a light path through which an input light is entered into the electric acousto-optic element at a Bragg angle of the diffraction grating in a prescribed direction side, the prescribed direction being defined as either identical or opposite to a propagation direction of the ultrasonic waves, so that the first primary diffracted light is produced by the diffraction grating from the input light, a polarization plane rotated light produced by the polarization rotator is entered into the electric acousto-optic element at a Bragg angle of the diffraction grating in the prescribed direction side, and a second primary diffracted light produced by the diffraction grating from the polarization plane rotated light is outputted as an output light. An optical soliton-like return-to-zero pulse transmission system using a combination of this optical frequency shifter and a fixed optical filter in an optical amplifier repeater is also disclosed.

摘要翻译： 通过以下方法形成没有插入损耗极化依赖性和无偏振模色散的光学移频器：至少一个用于产生超声波的超声波发生器; 至少一个电声光学元件在被施加超声波发生器产生的超声波时形成至少一个衍射光栅; 至少一个偏振旋转器，用于将由衍射光栅产生的第一主衍射光的偏振面旋转90度; 以及在规定的方向侧以衍射光栅的布拉格角将输入光输入到电声元件中的光路，规定的方向被定义为与超声波的传播方向相同或相反 ，使得第一主衍射光由衍射光栅从输入光产生，由偏振旋转器产生的偏振面旋转的光以预定方向的衍射光栅的布拉格角进入电声元件 输出由衍射光栅从偏振面旋转的光产生的第二主衍射光作为输出光。 还公开了在光放大器中继器中使用该光移频器和固定滤光器的组合的光孤子状归零脉冲传输系统。

公开(公告)号：US5825144A

公开(公告)日：1998-10-20

申请号：US491991

申请日：1995-07-16

申请人： Masatoshi Suzuki ,  Koichi Futsuhara ,  Masayoshi Sakai

发明人： Masatoshi Suzuki ,  Koichi Futsuhara ,  Masayoshi Sakai

IPC分类号： H02P1/18 ,  H02K17/32

CPC分类号： H02P1/18

摘要： The invention relates to a drive control apparatus for a rotating machine having a movable part which is rotatably driven by a motor. The apparatus has a fail-safe construction which gives an output of logic value "1" when the movable part is stopped, wherein, to enable supply of motor current to start a motor (2) at the motor start-up time under a condition of the movable part stopped, motor drive permission is granted by a logical product output which is obtained by a logical product operation of a start signal generated by switching a start switch on, and a logical sum output obtained by a logical sum operation of an output of a current sensor (3) generating an output of logic value "1" when the motor current does not flow and an output of a rotation sensor (4) generating an output of logic value "1" when the movable part is rotating.

摘要翻译： PCT No.PCT / JP93 / 01695 Sec。 371日期：1995年7月17日 102（e）日期1995年7月17日PCT 1993年11月18日PCT公布。 公开号WO95 / 14326 日期：1995年5月26日本发明涉及一种具有由电动机可旋转地驱动的可动部的旋转机械的驱动控制装置。 该装置具有故障安全结构，当可移动部件停止时，其输出逻辑值为“1”，其中，为了在电动机起动时能够在一个条件下提供电动机电流以启动电动机（2） 可移动部分停止运行，通过逻辑积输出来确定电动机驱动许可，该逻辑积输出是通过开关开关产生的开始信号的逻辑积运算获得的逻辑乘积运算，以及通过输出的逻辑和运算获得的逻辑和输出 当电动机电流不流动时产生逻辑值“1”的输出的电流传感器（3）和当可动部分旋转时产生逻辑值“1”的输出的旋转传感器（4）的输出。

公开(公告)号：US5808789A

公开(公告)日：1998-09-15

申请号：US873568

申请日：1997-06-12

申请人： Noboru Edagawa ,  Hidenori Taga ,  Masatoshi Suzuki ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Noboru Edagawa ,  Hidenori Taga ,  Masatoshi Suzuki ,  Itsuro Morita ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： H01S3/10 ,  H01S3/06 ,  H04B3/04 ,  H04B10/2513 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02 ,  G02B6/26 ,  H04B3/14

CPC分类号： H04B10/2935 ,  H04B10/2912

摘要： An optically amplifying transmission system available for wider signal bands includes an optical transmission line 42 divided into two sections 42a and 42b, optically amplifying repeaters 48a having 7 m-long erbium-doped optical fibers to repeat transmission optical fibers 46a in the section 42a, and optically amplifying repeaters 48b having 10.8 m-long erbium-doped optical fibers to repeat transmission optical fibers 46b in the section 42b. The transmission optical fibers 46a an 46b are optical fibers absolutely identical in construction and length.

摘要翻译： 可用于更宽信号频带的光放大传输系统包括分为两部分42a和42b的光传输线42，光放大具有7m长掺铒光纤的中继器48a，以重复部分42a中的传输光纤46a，以及 将具有10.8m长的掺铒光纤的光放大中继器48b重复部分42b中的传输光纤46b。 透射光纤46a，46b是结构和长度完全相同的光纤。